PS4 Payload Avatar Dumper Test, developer Red-J made available a PS4 Avatar Dumper and Injector (Writer) for 4.55 / 5.05 Firmware jailbroken PlayStation 4 consoles.
Download: Avatardumper455.bin / Avatar_Dumper505.bin / Avatarinjector455.bin / Avatar_Injector505.bin / 4.55 HTML / 5.05 HTML / GIT / Added to PS4 Playground by EdiTzZ
And from the README.md: PS4 Avatar Dumper / Writer for 4.55 / 5.05
PS4 Payload Avatar Dumper dumps your Avatars folders from different users. Dumper will create a folder named "Avatar_Backup" to your USB key. In this folder you can find your "0x10..." folders for different users and avatars pictures.
PS4 Payload Avatar Injector read the "Avatar_Inject" folder from your USB key and copy the content of "0x100..." folder from it. When the copy is done, you must change user or reboot the ps4 to view the change.
Fully tested html version on 5.05 and 4.55 100% working, few issue of memory sometimes on 4.55. Binaries versions untested.
Custom Avatar Videos via mohammadfadel
PS4 Avatar Quick Switch via GrimDoe